v0.19.0

Added

• The Pulls screen now lists the commits a pull request would land. A new
  "Commits" tab, counted next to its name, shows every commit oldest first: the
  subject line, who committed it and when, and clicking a row opens its message
  body — the branch's story, which the diff and the file list never tell. The commits ride along with the lookup the screen already makes,
  so it costs no extra round-trip.

Fixed

• The shell no longer behaves like a browser. The window is one only by
  construction, and its reflexes leaked through everywhere except a focused
  terminal, which already swallows them: a locale that did not match the UI
  raised the translate bubble on startup; Ctrl+W closed the window, which quits
  lich; Ctrl+T and Ctrl+N opened tabs and windows; Ctrl+P, Ctrl+S and Ctrl+O
  opened dialogs with nowhere to land; Ctrl+Shift+Delete would have wiped lich's
  own saved settings along with the browsing data; right-clicking the UI offered
  Back, Reload and Save as; dropping a file on the window replaced the app with
  that file, with no address bar to come back from; and middle-clicking a link
  spawned a browser window. All of it is now refused. Reload, the devtools chords
  and the terminal's own right-click menu are deliberately kept, and every chord
  still reaches a terminal as its PTY sequence — Ctrl+W stays delete-word,
  Ctrl+U kill-line, Ctrl+D end-of-file.
• A new directory of files now counts as the files it holds, not as one. The
  changed-file count came from git status --porcelain, which reports an
  untracked directory as a single ?? pkg/ entry — so an agent writing 25 files
  into fresh packages showed 4 changed files in the footer and on the session
  card, while the Review tab listed all of them. The count now asks git for
  every untracked file; the line totals were already right.
• Merging a pull request now clears its badge everywhere, at once. The
  footer, the session cards and the sidebar's "Pull request" entry only looked
  the pull request up again when the checkout's HEAD moved, or when the window
  lost focus and got it back — and a merge does neither, since the commit lands
  on the base branch, on the remote. Merging from the Pulls screen emptied that
  screen while every badge around it went on reading #N Open until you clicked
  away to another window and back. Merging, opening a pull request and the
  header's reload button now retire the shared answer and re-read it.
• A model newer than your lich no longer reads its context window as 200k.
  Opus 5 sessions showed five times their real usage in the footer, because the
  window came from a table of the 1M models and anything missing from it fell
  back to the smallest window that fit — so every model launch needed a release
  here. The rule is now the other way round: Haiku is the 200k exception and
  everything else is 1M, which is what a model released after your build reads
  without a new version.
• A pull request with hundreds of changed files no longer locks the app.
  Every file in a diff panel starts expanded, and an expanded file builds its own
  CodeMirror view — so a 191-file pull request built 191 editors in one go, each
  followed by a language chunk re-configuring its document. Chromium offered to
  kill the page, and the screen stayed unusable well after it recovered. A file's
  editor is now built only once its card comes near the viewport; until then the
  card holds a placeholder of the file's height, so the scrollbar still measures
  the whole diff. An editor that has been built stays built, keeping its
  selection and highlighting when you scroll back. That 191-file diff now settles
  in 465 ms with 8 editors, against 13.7 s with 191. The dock's Review tab shares
  the same cards and the same fix. Files changed also stopped refetching the diff
  every time the window regained focus — a new commit still refreshes it.
• The pull request screen no longer waits behind a bare "Loading…". Both the
  lookup and the diff are gh round-trips of about a second, and on a screen
  that size a single muted line read as a failure. Each now holds the shape of
  what is coming — title, actions, status line and tabs for the pull request;
  file tree, toolbar and file cards for Files changed.